/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 21:58:14,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 21:58:14,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 21:58:14,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 21:58:14,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 21:58:14,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 21:58:14,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 21:58:14,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 21:58:14,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 21:58:14,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 21:58:14,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 21:58:14,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 21:58:14,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 21:58:14,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 21:58:14,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 21:58:14,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 21:58:14,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 21:58:14,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 21:58:14,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 21:58:14,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 21:58:14,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 21:58:14,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 21:58:14,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 21:58:14,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 21:58:14,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 21:58:14,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 21:58:14,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 21:58:14,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 21:58:14,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-23 21:58:14,376 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 21:58:14,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 21:58:14,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 21:58:14,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 21:58:14,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 21:58:14,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 21:58:14,379 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 21:58:14,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 21:58:14,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 21:58:14,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 21:58:14,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 21:58:14,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 21:58:14,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 21:58:14,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 21:58:14,381 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 21:58:14,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 21:58:14,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 21:58:14,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 21:58:14,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 21:58:14,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 21:58:14,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 21:58:14,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 21:58:14,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 21:58:14,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 21:58:14,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 21:58:14,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 21:58:14,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-23 21:58:14,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-23 21:58:14,383 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 21:58:14,383 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 21:58:14,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 21:58:14,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 21:58:14,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 21:58:14,617 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 21:58:14,618 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 21:58:14,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound10.c [2022-02-23 21:58:14,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff122f457/03eddfb854e14329a78693bc9487d40b/FLAGdcc116878 [2022-02-23 21:58:15,070 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 21:58:15,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound10.c [2022-02-23 21:58:15,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff122f457/03eddfb854e14329a78693bc9487d40b/FLAGdcc116878 [2022-02-23 21:58:15,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff122f457/03eddfb854e14329a78693bc9487d40b [2022-02-23 21:58:15,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 21:58:15,100 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 21:58:15,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 21:58:15,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 21:58:15,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 21:58:15,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 09:58:15" (1/1) ... [2022-02-23 21:58:15,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35eac179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 09:58:15, skipping insertion in model container [2022-02-23 21:58:15,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 09:58:15" (1/1) ... [2022-02-23 21:58:15,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 21:58:15,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 21:58:15,299 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound10.c[588,601] [2022-02-23 21:58:15,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 21:58:15,337 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 21:58:15,352 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound10.c[588,601] [2022-02-23 21:58:15,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 21:58:15,385 INFO L208 MainTranslator]: Completed translation [2022-02-23 21:58:15,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 09:58:15 WrapperNode [2022-02-23 21:58:15,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 21:58:15,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 21:58:15,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 21:58:15,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 21:58:15,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 09:58:15" (1/1) ... [2022-02-23 21:58:15,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 09:58:15" (1/1) ... [2022-02-23 21:58:15,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 09:58:15" (1/1) ... [2022-02-23 21:58:15,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 09:58:15" (1/1) ... [2022-02-23 21:58:15,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 09:58:15" (1/1) ... [2022-02-23 21:58:15,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 09:58:15" (1/1) ... [2022-02-23 21:58:15,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 09:58:15" (1/1) ... [2022-02-23 21:58:15,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 21:58:15,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 21:58:15,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 21:58:15,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 21:58:15,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 09:58:15" (1/1) ... [2022-02-23 21:58:15,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 21:58:15,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 21:58:15,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-23 21:58:15,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-23 21:58:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 21:58:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 21:58:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 21:58:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 21:58:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 21:58:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 21:58:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 21:58:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 21:58:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 21:58:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 21:58:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2022-02-23 21:58:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 21:58:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 21:58:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 21:58:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 21:58:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 21:58:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 21:58:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 21:58:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 21:58:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 21:58:15,561 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 21:58:15,562 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 21:58:15,733 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 21:58:15,755 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 21:58:15,756 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 21:58:15,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 09:58:15 BoogieIcfgContainer [2022-02-23 21:58:15,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 21:58:15,758 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 21:58:15,758 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 21:58:15,760 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 21:58:15,762 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 09:58:15" (1/1) ... [2022-02-23 21:58:15,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 09:58:15 BasicIcfg [2022-02-23 21:58:15,789 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 21:58:15,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 21:58:15,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 21:58:15,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 21:58:15,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 09:58:15" (1/4) ... [2022-02-23 21:58:15,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5162e319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 09:58:15, skipping insertion in model container [2022-02-23 21:58:15,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 09:58:15" (2/4) ... [2022-02-23 21:58:15,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5162e319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 09:58:15, skipping insertion in model container [2022-02-23 21:58:15,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 09:58:15" (3/4) ... [2022-02-23 21:58:15,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5162e319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 09:58:15, skipping insertion in model container [2022-02-23 21:58:15,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 09:58:15" (4/4) ... [2022-02-23 21:58:15,800 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound10.cqvasr [2022-02-23 21:58:15,805 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 21:58:15,805 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 21:58:15,852 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 21:58:15,861 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 21:58:15,861 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 21:58:15,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-02-23 21:58:15,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-23 21:58:15,884 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:15,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:15,885 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:15,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:15,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1231486971, now seen corresponding path program 1 times [2022-02-23 21:58:15,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:15,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140244509] [2022-02-23 21:58:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:15,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 21:58:16,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 21:58:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 21:58:16,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 21:58:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 21:58:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 21:58:16,089 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:58:16,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140244509] [2022-02-23 21:58:16,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140244509] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 21:58:16,091 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 21:58:16,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 21:58:16,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327485949] [2022-02-23 21:58:16,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 21:58:16,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 21:58:16,098 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:58:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 21:58:16,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 21:58:16,127 INFO L87 Difference]: Start difference. First operand has 36 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-23 21:58:16,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:58:16,252 INFO L93 Difference]: Finished difference Result 63 states and 101 transitions. [2022-02-23 21:58:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 21:58:16,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-02-23 21:58:16,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:58:16,264 INFO L225 Difference]: With dead ends: 63 [2022-02-23 21:58:16,264 INFO L226 Difference]: Without dead ends: 31 [2022-02-23 21:58:16,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 21:58:16,269 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 21:58:16,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 21:58:16,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-23 21:58:16,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-02-23 21:58:16,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-02-23 21:58:16,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2022-02-23 21:58:16,319 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 17 [2022-02-23 21:58:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:58:16,320 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2022-02-23 21:58:16,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-23 21:58:16,321 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2022-02-23 21:58:16,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-23 21:58:16,322 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:16,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:16,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 21:58:16,324 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:16,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash -574090659, now seen corresponding path program 1 times [2022-02-23 21:58:16,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:16,326 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306544312] [2022-02-23 21:58:16,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:16,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 21:58:16,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 21:58:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 21:58:16,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 21:58:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 21:58:16,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 21:58:16,520 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:58:16,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306544312] [2022-02-23 21:58:16,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306544312] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 21:58:16,520 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 21:58:16,520 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 21:58:16,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705791441] [2022-02-23 21:58:16,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 21:58:16,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 21:58:16,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:58:16,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 21:58:16,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 21:58:16,523 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-23 21:58:16,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:58:16,753 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-02-23 21:58:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 21:58:16,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-02-23 21:58:16,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:58:16,756 INFO L225 Difference]: With dead ends: 37 [2022-02-23 21:58:16,756 INFO L226 Difference]: Without dead ends: 35 [2022-02-23 21:58:16,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-23 21:58:16,763 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 22 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 21:58:16,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 43 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 21:58:16,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-23 21:58:16,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-02-23 21:58:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-02-23 21:58:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-02-23 21:58:16,777 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 17 [2022-02-23 21:58:16,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:58:16,778 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-02-23 21:58:16,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-23 21:58:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-02-23 21:58:16,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-23 21:58:16,779 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:16,779 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:16,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-23 21:58:16,780 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:16,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:16,780 INFO L85 PathProgramCache]: Analyzing trace with hash 344526146, now seen corresponding path program 1 times [2022-02-23 21:58:16,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:16,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005438100] [2022-02-23 21:58:16,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:16,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:16,797 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 21:58:16,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912955224] [2022-02-23 21:58:16,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:16,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:16,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 21:58:16,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 21:58:16,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 21:58:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 21:58:16,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-23 21:58:16,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 21:58:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 21:58:16,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 21:58:16,972 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:58:16,972 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005438100] [2022-02-23 21:58:16,973 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 21:58:16,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912955224] [2022-02-23 21:58:16,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912955224] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 21:58:16,976 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 21:58:16,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 21:58:16,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636657587] [2022-02-23 21:58:16,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 21:58:16,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 21:58:16,981 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:58:16,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 21:58:16,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 21:58:16,982 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-23 21:58:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:58:17,036 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2022-02-23 21:58:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 21:58:17,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-02-23 21:58:17,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:58:17,039 INFO L225 Difference]: With dead ends: 54 [2022-02-23 21:58:17,039 INFO L226 Difference]: Without dead ends: 52 [2022-02-23 21:58:17,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-23 21:58:17,041 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 21:58:17,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 168 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 21:58:17,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-02-23 21:58:17,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2022-02-23 21:58:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 20 states have (on average 1.1) internal successors, (22), 22 states have internal predecessors, (22), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-02-23 21:58:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2022-02-23 21:58:17,059 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 22 [2022-02-23 21:58:17,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:58:17,060 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2022-02-23 21:58:17,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-23 21:58:17,060 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2022-02-23 21:58:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-23 21:58:17,061 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:17,061 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:17,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-23 21:58:17,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:17,278 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:17,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:17,278 INFO L85 PathProgramCache]: Analyzing trace with hash 942277242, now seen corresponding path program 1 times [2022-02-23 21:58:17,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:17,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649097172] [2022-02-23 21:58:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:17,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:17,288 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 21:58:17,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468290296] [2022-02-23 21:58:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:17,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:17,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 21:58:17,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 21:58:17,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 21:58:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 21:58:17,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-23 21:58:17,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 21:58:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 21:58:17,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 21:58:17,434 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:58:17,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649097172] [2022-02-23 21:58:17,434 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 21:58:17,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468290296] [2022-02-23 21:58:17,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468290296] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 21:58:17,438 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 21:58:17,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 21:58:17,438 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125835464] [2022-02-23 21:58:17,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 21:58:17,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 21:58:17,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:58:17,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 21:58:17,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 21:58:17,440 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-23 21:58:17,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:58:17,498 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2022-02-23 21:58:17,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 21:58:17,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2022-02-23 21:58:17,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:58:17,502 INFO L225 Difference]: With dead ends: 58 [2022-02-23 21:58:17,502 INFO L226 Difference]: Without dead ends: 56 [2022-02-23 21:58:17,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-23 21:58:17,505 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 6 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 21:58:17,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 165 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 21:58:17,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-02-23 21:58:17,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2022-02-23 21:58:17,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-02-23 21:58:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2022-02-23 21:58:17,537 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 27 [2022-02-23 21:58:17,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:58:17,537 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2022-02-23 21:58:17,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-23 21:58:17,537 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2022-02-23 21:58:17,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-23 21:58:17,538 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:17,538 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:17,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 21:58:17,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-02-23 21:58:17,758 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:17,759 INFO L85 PathProgramCache]: Analyzing trace with hash -881201762, now seen corresponding path program 1 times [2022-02-23 21:58:17,759 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:17,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911072415] [2022-02-23 21:58:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:17,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:17,767 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 21:58:17,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934471852] [2022-02-23 21:58:17,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:17,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:17,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 21:58:17,769 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 21:58:17,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-23 21:58:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 21:58:17,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-23 21:58:17,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 21:58:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-23 21:58:17,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 21:58:17,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:58:17,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911072415] [2022-02-23 21:58:17,926 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 21:58:17,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934471852] [2022-02-23 21:58:17,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934471852] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 21:58:17,926 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 21:58:17,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 21:58:17,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050846032] [2022-02-23 21:58:17,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 21:58:17,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 21:58:17,927 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:58:17,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 21:58:17,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 21:58:17,927 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 21:58:18,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:58:18,018 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2022-02-23 21:58:18,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 21:58:18,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2022-02-23 21:58:18,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:58:18,028 INFO L225 Difference]: With dead ends: 66 [2022-02-23 21:58:18,029 INFO L226 Difference]: Without dead ends: 54 [2022-02-23 21:58:18,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-23 21:58:18,030 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 21:58:18,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 157 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 21:58:18,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-02-23 21:58:18,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-02-23 21:58:18,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 19 states have call successors, (19), 8 states have call predecessors, (19), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-23 21:58:18,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2022-02-23 21:58:18,038 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 32 [2022-02-23 21:58:18,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:58:18,038 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2022-02-23 21:58:18,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 21:58:18,038 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2022-02-23 21:58:18,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-23 21:58:18,039 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:18,039 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:18,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-23 21:58:18,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:18,260 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:18,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:18,261 INFO L85 PathProgramCache]: Analyzing trace with hash 72164327, now seen corresponding path program 1 times [2022-02-23 21:58:18,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:18,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677153482] [2022-02-23 21:58:18,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:18,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:18,270 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 21:58:18,271 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537518693] [2022-02-23 21:58:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:18,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:18,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 21:58:18,272 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 21:58:18,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-23 21:58:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 21:58:18,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-23 21:58:18,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 21:58:18,506 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-02-23 21:58:18,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 21:58:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-02-23 21:58:18,641 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:58:18,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677153482] [2022-02-23 21:58:18,642 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 21:58:18,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537518693] [2022-02-23 21:58:18,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537518693] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 21:58:18,642 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 21:58:18,642 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-02-23 21:58:18,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290046130] [2022-02-23 21:58:18,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 21:58:18,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 21:58:18,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:58:18,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 21:58:18,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-23 21:58:18,644 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-02-23 21:58:19,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:58:19,015 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2022-02-23 21:58:19,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 21:58:19,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 49 [2022-02-23 21:58:19,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:58:19,017 INFO L225 Difference]: With dead ends: 77 [2022-02-23 21:58:19,017 INFO L226 Difference]: Without dead ends: 75 [2022-02-23 21:58:19,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-02-23 21:58:19,018 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 9 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-23 21:58:19,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 237 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-23 21:58:19,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-02-23 21:58:19,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 62. [2022-02-23 21:58:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 19 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-23 21:58:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2022-02-23 21:58:19,032 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 49 [2022-02-23 21:58:19,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:58:19,032 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-02-23 21:58:19,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-02-23 21:58:19,032 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2022-02-23 21:58:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-23 21:58:19,034 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:19,034 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:19,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-23 21:58:19,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:19,247 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:19,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:19,248 INFO L85 PathProgramCache]: Analyzing trace with hash 655575797, now seen corresponding path program 2 times [2022-02-23 21:58:19,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:19,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014973489] [2022-02-23 21:58:19,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:19,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:19,258 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 21:58:19,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082096283] [2022-02-23 21:58:19,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 21:58:19,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:19,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 21:58:19,264 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 21:58:19,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-23 21:58:19,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 21:58:19,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 21:58:19,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-23 21:58:19,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 21:58:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-02-23 21:58:19,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 21:58:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-02-23 21:58:19,616 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:58:19,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014973489] [2022-02-23 21:58:19,616 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 21:58:19,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082096283] [2022-02-23 21:58:19,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082096283] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 21:58:19,616 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 21:58:19,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-02-23 21:58:19,617 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185197525] [2022-02-23 21:58:19,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 21:58:19,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 21:58:19,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:58:19,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 21:58:19,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-23 21:58:19,620 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-02-23 21:58:19,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:58:19,720 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2022-02-23 21:58:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 21:58:19,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 54 [2022-02-23 21:58:19,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:58:19,722 INFO L225 Difference]: With dead ends: 81 [2022-02-23 21:58:19,722 INFO L226 Difference]: Without dead ends: 79 [2022-02-23 21:58:19,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-23 21:58:19,724 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 7 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 21:58:19,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 239 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 21:58:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-23 21:58:19,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2022-02-23 21:58:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 37 states have (on average 1.054054054054054) internal successors, (39), 39 states have internal predecessors, (39), 22 states have call successors, (22), 11 states have call predecessors, (22), 10 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-02-23 21:58:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2022-02-23 21:58:19,754 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 54 [2022-02-23 21:58:19,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:58:19,754 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2022-02-23 21:58:19,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-02-23 21:58:19,754 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2022-02-23 21:58:19,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-23 21:58:19,760 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:19,760 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:19,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-23 21:58:19,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:19,983 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:19,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:19,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1963047427, now seen corresponding path program 3 times [2022-02-23 21:58:19,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:19,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715052949] [2022-02-23 21:58:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:19,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:19,992 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 21:58:19,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005445271] [2022-02-23 21:58:19,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 21:58:19,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:19,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 21:58:19,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 21:58:20,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-23 21:58:20,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-23 21:58:20,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 21:58:20,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-23 21:58:20,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 21:58:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-02-23 21:58:20,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 21:58:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-02-23 21:58:20,493 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:58:20,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715052949] [2022-02-23 21:58:20,493 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 21:58:20,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005445271] [2022-02-23 21:58:20,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005445271] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 21:58:20,494 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 21:58:20,494 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-02-23 21:58:20,494 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974468399] [2022-02-23 21:58:20,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 21:58:20,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 21:58:20,495 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:58:20,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 21:58:20,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-23 21:58:20,495 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-02-23 21:58:20,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:58:20,734 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2022-02-23 21:58:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 21:58:20,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 59 [2022-02-23 21:58:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:58:20,736 INFO L225 Difference]: With dead ends: 93 [2022-02-23 21:58:20,736 INFO L226 Difference]: Without dead ends: 85 [2022-02-23 21:58:20,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-23 21:58:20,737 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 21:58:20,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 183 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 21:58:20,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-02-23 21:58:20,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2022-02-23 21:58:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 48 states have internal predecessors, (48), 19 states have call successors, (19), 14 states have call predecessors, (19), 13 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-23 21:58:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2022-02-23 21:58:20,750 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 59 [2022-02-23 21:58:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:58:20,750 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2022-02-23 21:58:20,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-02-23 21:58:20,750 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2022-02-23 21:58:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-23 21:58:20,751 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:20,751 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:20,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-23 21:58:20,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:20,968 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:20,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:20,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1897273453, now seen corresponding path program 1 times [2022-02-23 21:58:20,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:20,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449802214] [2022-02-23 21:58:20,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:20,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:20,978 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 21:58:20,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369104732] [2022-02-23 21:58:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:20,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:20,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 21:58:20,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 21:58:20,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-23 21:58:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 21:58:21,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-23 21:58:21,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 21:58:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-02-23 21:58:21,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 21:58:21,628 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:58:21,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449802214] [2022-02-23 21:58:21,628 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 21:58:21,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369104732] [2022-02-23 21:58:21,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369104732] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 21:58:21,629 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-23 21:58:21,631 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-02-23 21:58:21,631 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463143645] [2022-02-23 21:58:21,631 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-23 21:58:21,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 21:58:21,632 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:58:21,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 21:58:21,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-23 21:58:21,633 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-02-23 21:58:21,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:58:21,745 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2022-02-23 21:58:21,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 21:58:21,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 75 [2022-02-23 21:58:21,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:58:21,747 INFO L225 Difference]: With dead ends: 95 [2022-02-23 21:58:21,747 INFO L226 Difference]: Without dead ends: 93 [2022-02-23 21:58:21,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-02-23 21:58:21,748 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 21:58:21,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 216 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 21:58:21,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-02-23 21:58:21,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2022-02-23 21:58:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 55 states have internal predecessors, (56), 23 states have call successors, (23), 16 states have call predecessors, (23), 15 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-02-23 21:58:21,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2022-02-23 21:58:21,762 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 75 [2022-02-23 21:58:21,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:58:21,763 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2022-02-23 21:58:21,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-02-23 21:58:21,763 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2022-02-23 21:58:21,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-23 21:58:21,764 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:21,764 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:21,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-23 21:58:21,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:21,980 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:21,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:21,980 INFO L85 PathProgramCache]: Analyzing trace with hash -994112719, now seen corresponding path program 1 times [2022-02-23 21:58:21,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:21,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933693132] [2022-02-23 21:58:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:21,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:21,995 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 21:58:21,995 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950304714] [2022-02-23 21:58:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:21,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:21,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 21:58:22,008 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 21:58:22,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-23 21:58:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 21:58:22,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-23 21:58:22,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 21:58:22,731 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 79 proven. 12 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-02-23 21:58:22,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 21:58:30,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:58:30,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933693132] [2022-02-23 21:58:30,197 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 21:58:30,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950304714] [2022-02-23 21:58:30,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950304714] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 21:58:30,197 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-23 21:58:30,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-02-23 21:58:30,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274736029] [2022-02-23 21:58:30,198 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-23 21:58:30,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-23 21:58:30,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:58:30,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-23 21:58:30,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-02-23 21:58:30,199 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-02-23 21:58:31,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:58:31,332 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-02-23 21:58:31,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-23 21:58:31,333 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 80 [2022-02-23 21:58:31,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:58:31,353 INFO L225 Difference]: With dead ends: 103 [2022-02-23 21:58:31,353 INFO L226 Difference]: Without dead ends: 90 [2022-02-23 21:58:31,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2022-02-23 21:58:31,354 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 21:58:31,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 252 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 21:58:31,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-02-23 21:58:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-02-23 21:58:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 21 states have call successors, (21), 16 states have call predecessors, (21), 15 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-02-23 21:58:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2022-02-23 21:58:31,379 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 80 [2022-02-23 21:58:31,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:58:31,379 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2022-02-23 21:58:31,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-02-23 21:58:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2022-02-23 21:58:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-23 21:58:31,380 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:31,381 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:31,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-23 21:58:31,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-02-23 21:58:31,592 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:31,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1391751782, now seen corresponding path program 4 times [2022-02-23 21:58:31,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:31,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978896642] [2022-02-23 21:58:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:31,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:31,600 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 21:58:31,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742046723] [2022-02-23 21:58:31,600 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 21:58:31,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:31,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 21:58:31,606 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 21:58:31,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-23 21:58:31,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 21:58:31,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 21:58:31,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-23 21:58:31,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 21:58:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-02-23 21:58:31,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 21:58:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-02-23 21:58:32,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:58:32,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978896642] [2022-02-23 21:58:32,113 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 21:58:32,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742046723] [2022-02-23 21:58:32,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742046723] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 21:58:32,113 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 21:58:32,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-02-23 21:58:32,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108443323] [2022-02-23 21:58:32,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 21:58:32,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-23 21:58:32,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:58:32,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-23 21:58:32,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-02-23 21:58:32,115 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2022-02-23 21:58:32,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:58:32,368 INFO L93 Difference]: Finished difference Result 106 states and 118 transitions. [2022-02-23 21:58:32,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 21:58:32,369 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 81 [2022-02-23 21:58:32,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:58:32,371 INFO L225 Difference]: With dead ends: 106 [2022-02-23 21:58:32,371 INFO L226 Difference]: Without dead ends: 104 [2022-02-23 21:58:32,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-02-23 21:58:32,372 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 21:58:32,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 226 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 21:58:32,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-02-23 21:58:32,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2022-02-23 21:58:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 57 states have internal predecessors, (58), 21 states have call successors, (21), 17 states have call predecessors, (21), 16 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-02-23 21:58:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2022-02-23 21:58:32,385 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 81 [2022-02-23 21:58:32,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:58:32,385 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2022-02-23 21:58:32,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2022-02-23 21:58:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2022-02-23 21:58:32,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-02-23 21:58:32,386 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:32,387 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:32,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-23 21:58:32,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:32,595 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:32,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:32,596 INFO L85 PathProgramCache]: Analyzing trace with hash 574631438, now seen corresponding path program 2 times [2022-02-23 21:58:32,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:32,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658673862] [2022-02-23 21:58:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:32,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:32,605 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 21:58:32,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364028326] [2022-02-23 21:58:32,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 21:58:32,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:32,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 21:58:32,606 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 21:58:32,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-23 21:58:32,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 21:58:32,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 21:58:32,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-23 21:58:32,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 21:58:33,070 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 32 proven. 21 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-02-23 21:58:33,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 21:58:33,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:58:33,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658673862] [2022-02-23 21:58:33,300 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 21:58:33,300 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364028326] [2022-02-23 21:58:33,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364028326] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 21:58:33,300 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-23 21:58:33,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-02-23 21:58:33,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032776442] [2022-02-23 21:58:33,312 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-23 21:58:33,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 21:58:33,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:58:33,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 21:58:33,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-23 21:58:33,313 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-02-23 21:58:33,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:58:33,461 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2022-02-23 21:58:33,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 21:58:33,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 102 [2022-02-23 21:58:33,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:58:33,462 INFO L225 Difference]: With dead ends: 118 [2022-02-23 21:58:33,463 INFO L226 Difference]: Without dead ends: 116 [2022-02-23 21:58:33,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-23 21:58:33,463 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 21:58:33,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 290 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 21:58:33,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-02-23 21:58:33,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2022-02-23 21:58:33,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 67 states have (on average 1.044776119402985) internal successors, (70), 69 states have internal predecessors, (70), 28 states have call successors, (28), 20 states have call predecessors, (28), 19 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-23 21:58:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2022-02-23 21:58:33,480 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 102 [2022-02-23 21:58:33,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:58:33,481 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2022-02-23 21:58:33,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-02-23 21:58:33,481 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2022-02-23 21:58:33,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-02-23 21:58:33,482 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:33,482 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:33,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-23 21:58:33,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-02-23 21:58:33,695 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 474519958, now seen corresponding path program 2 times [2022-02-23 21:58:33,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:33,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607011665] [2022-02-23 21:58:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:33,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:33,704 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 21:58:33,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577614670] [2022-02-23 21:58:33,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 21:58:33,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:33,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 21:58:33,711 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 21:58:33,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-23 21:58:33,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 21:58:33,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 21:58:33,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-23 21:58:33,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 21:58:34,086 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 34 proven. 21 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-02-23 21:58:34,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 21:58:34,314 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:58:34,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607011665] [2022-02-23 21:58:34,314 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 21:58:34,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577614670] [2022-02-23 21:58:34,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577614670] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 21:58:34,315 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-23 21:58:34,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-02-23 21:58:34,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900277870] [2022-02-23 21:58:34,315 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-23 21:58:34,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 21:58:34,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:58:34,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 21:58:34,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-23 21:58:34,316 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-02-23 21:58:34,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:58:34,447 INFO L93 Difference]: Finished difference Result 126 states and 133 transitions. [2022-02-23 21:58:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 21:58:34,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 107 [2022-02-23 21:58:34,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:58:34,448 INFO L225 Difference]: With dead ends: 126 [2022-02-23 21:58:34,448 INFO L226 Difference]: Without dead ends: 113 [2022-02-23 21:58:34,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-23 21:58:34,449 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 6 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 21:58:34,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 299 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 21:58:34,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-02-23 21:58:34,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-02-23 21:58:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 26 states have call successors, (26), 20 states have call predecessors, (26), 19 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-02-23 21:58:34,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2022-02-23 21:58:34,464 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 107 [2022-02-23 21:58:34,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:58:34,464 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2022-02-23 21:58:34,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-02-23 21:58:34,464 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2022-02-23 21:58:34,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-02-23 21:58:34,465 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:34,465 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:34,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-23 21:58:34,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-02-23 21:58:34,679 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:34,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:34,680 INFO L85 PathProgramCache]: Analyzing trace with hash 94155443, now seen corresponding path program 3 times [2022-02-23 21:58:34,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:34,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602688541] [2022-02-23 21:58:34,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:34,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:34,699 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 21:58:34,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337259930] [2022-02-23 21:58:34,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 21:58:34,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:34,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 21:58:34,701 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 21:58:34,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-23 21:58:35,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-23 21:58:35,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 21:58:35,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-23 21:58:35,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 21:58:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2022-02-23 21:58:35,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 21:58:35,506 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:58:35,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602688541] [2022-02-23 21:58:35,507 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 21:58:35,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337259930] [2022-02-23 21:58:35,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337259930] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 21:58:35,507 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-23 21:58:35,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-02-23 21:58:35,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563854648] [2022-02-23 21:58:35,507 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-23 21:58:35,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 21:58:35,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:58:35,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 21:58:35,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-02-23 21:58:35,508 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2022-02-23 21:58:35,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:58:35,685 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2022-02-23 21:58:35,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-23 21:58:35,685 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) Word has length 129 [2022-02-23 21:58:35,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:58:35,686 INFO L225 Difference]: With dead ends: 119 [2022-02-23 21:58:35,686 INFO L226 Difference]: Without dead ends: 115 [2022-02-23 21:58:35,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-02-23 21:58:35,687 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 21:58:35,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 139 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 21:58:35,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-02-23 21:58:35,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-02-23 21:58:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 26 states have call successors, (26), 21 states have call predecessors, (26), 19 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-02-23 21:58:35,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2022-02-23 21:58:35,702 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 129 [2022-02-23 21:58:35,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:58:35,703 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2022-02-23 21:58:35,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2022-02-23 21:58:35,703 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2022-02-23 21:58:35,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-02-23 21:58:35,704 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 21:58:35,704 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 21:58:35,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-23 21:58:35,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-23 21:58:35,910 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 21:58:35,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 21:58:35,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1269707793, now seen corresponding path program 3 times [2022-02-23 21:58:35,910 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 21:58:35,911 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681346578] [2022-02-23 21:58:35,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 21:58:35,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 21:58:35,927 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 21:58:35,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583201776] [2022-02-23 21:58:35,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 21:58:35,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 21:58:35,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 21:58:35,934 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 21:58:35,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-23 21:58:36,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-23 21:58:36,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 21:58:36,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 51 conjunts are in the unsatisfiable core [2022-02-23 21:58:36,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 21:58:51,949 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-23 21:58:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 261 proven. 74 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2022-02-23 21:58:54,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 21:59:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 204 proven. 34 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-02-23 21:59:00,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 21:59:00,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681346578] [2022-02-23 21:59:00,694 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 21:59:00,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583201776] [2022-02-23 21:59:00,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583201776] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 21:59:00,694 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 21:59:00,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 22 [2022-02-23 21:59:00,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585723822] [2022-02-23 21:59:00,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 21:59:00,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-23 21:59:00,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 21:59:00,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-23 21:59:00,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-02-23 21:59:00,695 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand has 22 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 13 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2022-02-23 21:59:02,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 21:59:02,462 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2022-02-23 21:59:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-23 21:59:02,462 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 13 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) Word has length 134 [2022-02-23 21:59:02,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 21:59:02,463 INFO L225 Difference]: With dead ends: 115 [2022-02-23 21:59:02,463 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 21:59:02,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 244 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2022-02-23 21:59:02,464 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-23 21:59:02,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 182 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-23 21:59:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 21:59:02,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 21:59:02,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-23 21:59:02,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 21:59:02,465 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2022-02-23 21:59:02,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 21:59:02,465 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 21:59:02,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 13 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2022-02-23 21:59:02,465 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 21:59:02,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 21:59:02,468 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 21:59:02,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-23 21:59:02,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-23 21:59:02,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-23 21:59:05,003 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-23 21:59:05,003 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-02-23 21:59:05,004 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-02-23 21:59:05,004 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-23 21:59:05,004 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-23 21:59:05,004 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-23 21:59:05,004 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-23 21:59:05,004 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-02-23 21:59:05,004 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-02-23 21:59:05,004 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2022-02-23 21:59:05,004 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-02-23 21:59:05,004 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 22 56) the Hoare annotation is: true [2022-02-23 21:59:05,004 INFO L854 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (* (- 1) main_~a~0))) (or (and (< main_~a~0 65536) (<= 0 main_~a~0) (<= (div main_~a~0 (- 65536)) (div (+ .cse0 32767) 65536))) (and (<= 0 (+ 65536 main_~a~0)) (< (div (+ main_~a~0 32768) (- 65536)) (+ (div (+ (- 1) .cse0) 65536) 1)) (< main_~a~0 0)))) [2022-02-23 21:59:05,004 INFO L858 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-02-23 21:59:05,005 INFO L854 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ (* main_~z~0 main_~z~0) 12) (+ (* main_~y~0 12) (* main_~z~0 6))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0) (<= main_~a~0 10)) [2022-02-23 21:59:05,005 INFO L854 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (let ((.cse1 (= (+ (* main_~n~0 6) 6) main_~z~0))) (or (let ((.cse0 (div (+ main_~z~0 (- 6)) 6))) (and (not (<= .cse0 main_~a~0)) (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) .cse1 (<= 0 main_~a~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= .cse0 (+ main_~a~0 1)) (<= main_~a~0 10))) (and (= main_~x~0 0) (= main_~y~0 1) .cse1 (= main_~z~0 6)))) [2022-02-23 21:59:05,005 INFO L854 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ (* main_~z~0 main_~z~0) 12) (+ (* main_~y~0 12) (* main_~z~0 6))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0) (<= main_~a~0 10)) [2022-02-23 21:59:05,005 INFO L854 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse1 (= (+ (* main_~n~0 6) 6) main_~z~0))) (or (let ((.cse0 (div (+ main_~z~0 (- 6)) 6))) (and (not (<= .cse0 main_~a~0)) (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) .cse1 (<= 0 main_~a~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= .cse0 (+ main_~a~0 1)) (<= main_~a~0 10))) (and (= main_~x~0 0) (= main_~y~0 1) .cse1 (= main_~z~0 6)))) [2022-02-23 21:59:05,005 INFO L854 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ (* main_~z~0 main_~z~0) 12) (+ (* main_~y~0 12) (* main_~z~0 6))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0) (<= main_~a~0 10)) [2022-02-23 21:59:05,005 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (= (+ (* main_~n~0 6) 6) main_~z~0))) (or (and (= main_~x~0 0) (= main_~y~0 1) .cse0 (= main_~z~0 6)) (let ((.cse2 (* main_~z~0 main_~z~0)) (.cse1 (div (+ main_~z~0 (- 6)) 6))) (and (not (<= .cse1 main_~a~0)) (= (+ (* main_~z~0 main_~y~0) (* main_~z~0 8)) (+ (* main_~x~0 18) .cse2 18)) (= (+ .cse2 12) (+ (* main_~y~0 12) (* main_~z~0 6))) .cse0 (<= 0 main_~a~0) (<= .cse1 (+ main_~a~0 1)) (<= main_~a~0 10))))) [2022-02-23 21:59:05,005 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0) (<= main_~a~0 10)) [2022-02-23 21:59:05,017 INFO L854 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0)) [2022-02-23 21:59:05,017 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= main_~a~0 10)) [2022-02-23 21:59:05,017 INFO L854 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0)) [2022-02-23 21:59:05,018 INFO L854 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= main_~a~0 10)) [2022-02-23 21:59:05,018 INFO L854 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0)) [2022-02-23 21:59:05,018 INFO L858 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2022-02-23 21:59:05,018 INFO L858 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2022-02-23 21:59:05,018 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 22 56) no Hoare annotation was computed. [2022-02-23 21:59:05,018 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 22 56) no Hoare annotation was computed. [2022-02-23 21:59:05,018 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-02-23 21:59:05,018 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-02-23 21:59:05,018 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-02-23 21:59:05,018 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-02-23 21:59:05,019 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-02-23 21:59:05,019 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-02-23 21:59:05,021 INFO L732 BasicCegarLoop]: Path program histogram: [4, 3, 3, 1, 1, 1, 1, 1] [2022-02-23 21:59:05,022 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 21:59:05,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 09:59:05 BasicIcfg [2022-02-23 21:59:05,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 21:59:05,038 INFO L158 Benchmark]: Toolchain (without parser) took 49937.87ms. Allocated memory was 221.2MB in the beginning and 266.3MB in the end (delta: 45.1MB). Free memory was 171.3MB in the beginning and 242.4MB in the end (delta: -71.1MB). Peak memory consumption was 127.7MB. Max. memory is 8.0GB. [2022-02-23 21:59:05,038 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 221.2MB. Free memory is still 187.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 21:59:05,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.81ms. Allocated memory is still 221.2MB. Free memory was 171.2MB in the beginning and 197.6MB in the end (delta: -26.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-23 21:59:05,038 INFO L158 Benchmark]: Boogie Preprocessor took 41.10ms. Allocated memory is still 221.2MB. Free memory was 197.3MB in the beginning and 196.2MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 21:59:05,039 INFO L158 Benchmark]: RCFGBuilder took 327.09ms. Allocated memory is still 221.2MB. Free memory was 195.8MB in the beginning and 185.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-23 21:59:05,039 INFO L158 Benchmark]: IcfgTransformer took 30.80ms. Allocated memory is still 221.2MB. Free memory was 185.3MB in the beginning and 184.0MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 21:59:05,039 INFO L158 Benchmark]: TraceAbstraction took 49246.96ms. Allocated memory was 221.2MB in the beginning and 266.3MB in the end (delta: 45.1MB). Free memory was 183.6MB in the beginning and 242.4MB in the end (delta: -58.8MB). Peak memory consumption was 139.8MB. Max. memory is 8.0GB. [2022-02-23 21:59:05,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 221.2MB. Free memory is still 187.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 284.81ms. Allocated memory is still 221.2MB. Free memory was 171.2MB in the beginning and 197.6MB in the end (delta: -26.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.10ms. Allocated memory is still 221.2MB. Free memory was 197.3MB in the beginning and 196.2MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 327.09ms. Allocated memory is still 221.2MB. Free memory was 195.8MB in the beginning and 185.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 30.80ms. Allocated memory is still 221.2MB. Free memory was 185.3MB in the beginning and 184.0MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 49246.96ms. Allocated memory was 221.2MB in the beginning and 266.3MB in the end (delta: 45.1MB). Free memory was 183.6MB in the beginning and 242.4MB in the end (delta: -58.8MB). Peak memory consumption was 139.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 49.2s, OverallIterations: 15, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 232 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 2833 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2231 mSDsCounter, 339 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1589 IncrementalHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 339 mSolverCounterUnsat, 602 mSDtfsCounter, 1589 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1533 GetRequests, 1370 SyntacticMatches, 12 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 14.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=12, InterpolantAutomatonStates: 112, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 54 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 70 PreInvPairs, 115 NumberOfFragments, 640 HoareAnnotationTreeSize, 70 FomulaSimplifications, 1236 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 19 FomulaSimplificationsInter, 30527 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 37.2s InterpolantComputationTime, 985 NumberOfCodeBlocks, 797 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1342 ConstructedInterpolants, 0 QuantifiedInterpolants, 5854 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1925 ConjunctsInSsa, 260 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 5635/5874 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((n <= a + 1 && z * z + 12 == y * 12 + z * 6) && n * 6 + 6 == z) && 0 <= a) && n * n * n == x) && a <= 10 RESULT: Ultimate proved your program to be correct! [2022-02-23 21:59:05,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...